#183858#183858

#183858 is a dark, moderate cyan. Relative luminance 0.037; OKLCH L 33.4% C 0.068 H 250.6°. Best body text is #FFFFFF at 12.03:1 contrast (WCAG AA passes).

Color values

HEX	#183858
RGB	rgb(24, 56, 88)
HSL	hsl(210, 57%, 22%)
HSV	hsv(210, 73%, 35%)
CMYK	cmyk(72.7%, 36.4%, 0%, 65.5%)
CIE-LAB	lab(22.75, 0.15, -22.71)
CIE-LCH	lch(22.75, 22.71, 270.38°)
OKLab	oklab(33.36% -0.0227 -0.0644)
OKLCH	oklch(33.36% 0.068 250.6)
XYZ	xyz(3.5517, 3.7268, 9.7628)
Luminance	0.0373 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183858 #583818

analogous

#185858 #183858 #181858

triadic

#183858 #581838 #385818

tetradic

#183858 #581858 #583818 #185818

square

#183858 #581858 #583818 #185818

split-complementary

#183858 #581818 #585818

monochromatic

#070F18 #0B1928 #183858 #255788 #3275B8

Accessibility & contrast

On white

12.03

#183858 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#183858 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183858

12.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183858	#FFFFFF	#000000	##FFFFFF
##183858	1.00	12.03	1.75	12.03
#FFFFFF	12.03	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A3A59

Deuteranopia (green-blind)

#213457

Tritanopia (blue-blind)

#004044

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #183858;
/* rgb */ color: rgb(24, 56, 88);
/* oklch */ color: oklch(33.4% 0.068 250.6);

Tailwind

colors: {
  custom: {
    50: '#5d6e87',
    500: '#183858',
    950: '#000000',
  },
}

SCSS

$custom: #183858;
$custom-light: #5d6e87;
$custom-dark: #000000;

JSON

{
  "hex": "#183858",
  "rgb": {
    "r": 24,
    "g": 56,
    "b": 88
  },
  "hsl": {
    "h": 210,
    "s": 57.143,
    "l": 21.961
  },
  "oklch": {
    "l": 0.33359,
    "c": 0.06825,
    "h": 250.6
  },
  "luminance": 0.03727
}

Semantic roles & 50–950 ramp

primary

#183858

secondary

#8F663D

accent

#9447E0

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#05070B

muted

#797A7C

Preview Lab

Preview with #183858

Body copy rendered with the generated semantic roles for this colour.

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